Index: head/sysutils/quickjail/Makefile
===================================================================
--- head/sysutils/quickjail/Makefile	(revision 555568)
+++ head/sysutils/quickjail/Makefile	(revision 555569)
@@ -1,24 +1,24 @@
 # $FreeBSD$
 
 PORTNAME=	quickjail
 PORTVERSION=	0.2.1
 CATEGORIES=	sysutils
 MASTER_SITES=	https://git.kevans.dev/kevans/${PORTNAME}/archive/${PORTVERSION}.tar.gz?dummy=/
 
 MAINTAINER=	kevans@FreeBSD.org
 COMMENT=	Utility to quickly create transient single-command jails
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		uidfix
+USES=		compiler:c11 uidfix
 
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
 MAKE_ENV+=	BINDIR="${PREFIX}/bin" \
 		MANDIR="${PREFIX}/share/man/man"
 
 pre-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/bin ${STAGEDIR}${PREFIX}/share/man/man1
 
 .include <bsd.port.mk>